Experimental research on water washing process of gas turbine blades

Abstract

As the core component of the compressor, the gas turbine blade is prone to oil accumulation, salt accumulation and scale under harsh working conditions, resulting in blade wear, bending and other faults. In order to ensure the normal operation of the gas turbine, regular daily cleaning is essential. In this paper, aiming at the problem of abnormal bending of the top of the second stage rotor blades of the compressor, starting from the water washing process and water washing effect of the compressor blade, the dirty blade in line with the actual working conditions is constructed, and the single blade offline water washing test bench is designed and built. After determining the ratio of the washing medium, the surface of the blade is washed by the nozzle. Finally, the quantitative evaluation of the washing effect shows that high temperature and detergent can significantly improve the off-line washing effect of gas turbine blades, and the conical jet nozzle has more advantages in the process of off-line washing.